How Can I Replicate Python's `zip` Function in JavaScript?

JavaScript Equivalency to Python's 'zip' Function

In Python, the 'zip' function combines elements from multiple lists into tuples, maintaining the order of their positions within the lists.

For example, given three lists of equal lengths:

list1 = [1, 2, 3]
list2 = ['a', 'b', 'c']
list3 = [4, 5, 6]

The 'zip' function returns the following list of tuples:

[(1, 'a', 4), (2, 'b', 5), (3, 'c', 6)]

JavaScript Equivalent:

JavaScript does not have a built-in 'zip' function. However, there are several ways to emulate its functionality:

Using the 'map' Function (ES5):

function zip(arrays) {
    return arrays[0].map(function(_, i) {
        return arrays.map(function(array) { return array[i] })
    });
}

Alternatively, using the spread operator (ES6):

const zip = (...rows) => rows[0].map((_, c) => rows.map(row => row[c]));

The output of this function will be an array of arrays, each representing a tuple of values from the input lists.

Note:

• The JavaScript versions assume the input lists are of equal lengths.
• Using the 'map' function reverses the order of the elements in the tuples compared to Python's 'zip' function.

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